# WattGuru vs Authenticator App

The clearest difference is update cadence: Authenticator App at every 6 days against WattGuru's fortnightly. WattGuru's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. WattGuru sells 1 one-off in-app purchase and Authenticator App sells 8 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

WattGuru ships an update fortnightly, Authenticator App every 6 days. The most recent releases landed on September 9, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | WattGuru | Authenticator App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (9 ratings)](https://appshunter.io/ios/app/authenticator-app-2fa-mfa/id6759959929/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 52 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Michael Caklec](https://appshunter.io/developer/974662614) | [Valerii Fedorak](https://appshunter.io/developer/1881934929) |

## What reviewers say

### WattGuru

[App page](https://appshunter.io/ios/app/wattguru/id6741865891)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WattGuru Full Version | $3.99 | one-time |


### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-2fa-mfa/id6759959929)

This app provides a secure and simple way to generate time-based one-time passwords for two-factor authentication. Protect your online accounts from unauthorized access with an extra layer of security for social media, banking, and work accounts.

**Highlights:** Generate time-based one-time passwords (TOTP), Quick account setup via QR codes or manual entry, Seamless cross-device synchronization, Enhanced account security, Supports social media, banking, and work accounts

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Week | $5.99 | per 7 days |
| Premium Week | $6.99 | per 7 days |
| Premium Week | $7.99 | per 7 days |
| Premium Week | $8.99 | per 7 days |
| Premium Week | $9.99 | per 7 days |
| Premium Yearly | $29.99 | per year |
| Premium yearly | $39.99 | per year |
| Premium Yearly | $49.99 | per year |


## Frequently asked questions

### Is WattGuru free?

WattGuru is free to download, with in-app purchases available.

### Is Authenticator App free?

Authenticator App is free to download, with in-app purchases available.

### Do WattGuru or Authenticator App have ads?

Neither WattGuru nor Authenticator App shows ads.

### Which is updated more often, WattGuru or Authenticator App?

WattGuru ships an update fortnightly, and Authenticator App every 6 days. Most recently, WattGuru was updated on September 9, 2026 and Authenticator App on September 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*